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Jill A. Jacobson

@doctorjaj.bsky.social
460 followers 998 following 55 posts

Professor and Chair of the Social-Personality Psychology Program at Queen’s University, Canada.

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Reposted by Jill A. Jacobson
Matt Graham @mattgraham.bsky.social · 17h
Out today: doi.org/10.1017/XPS....
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Reposted by Jill A. Jacobson
Tibor Tauzin @tibortauzin.bsky.social · 11/10/2026
Developmental science is no different. Thousands of hours of work to get to this conclusion: "In sum, scaling our sample sizes is helpful but insufficient. Resolving measurement challenges might require improving current paradigms or even developing new ones." www.nature.com/articles/s44...
nature.com
What 5000 babies can tell us about developing minds and how to study them - Communications Psychology
A decade of ManyBabies research, testing thousands of babies across hundreds of labs, has shown that some, but not all findings in infant research replicate well. Collectively, these projects have sho...
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moin syed @syeducation.bsky.social · 11/10/2026
There may be something newer available now, but a while ago I found this post helpful. We used that approach in this paper, all of the code is available in the OSF repo: doi.org/10.1037/per0... msilvestrin.me/posts/esem/
msilvestrin.me
Exploratory Structural Equation Modeling in R – Mateus Silvestrin, PhD
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Stephen Wild @stephenjwild.bsky.social · 11/10/2026
If you want to see a really good example of the big data paradox in action: www.nature.com/articles/s41...
nature.com
Unrepresentative big surveys significantly overestimated US vaccine uptake - Nature
An analysis of three surveys of COVID-19 vaccine behaviour shows that larger surveys overconfidently overestimated vaccine uptake, a demonstration of how larger sample sizes can paradoxicall...
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Richard McElreath 🐈‍⬛ @rmcelreath.bsky.social · 11/10/2026
We really need to make Meng's Big Data Paradox central to teaching, don't we? Researchers don't know this stuff bc they have never been exposed to it. But it is fundamental. (Link to paper PDF statistics.fas.harvard.edu/sites/g/file...)
3. Compensating for quality with quantity is a doomed game.
3.1. A law of large populations? Under a probabilistic sampling, a central
driving force for the stochastic behaviors of the sample mean (and alike) is the
sample size n. This is the case for the Law of Large Numbers (LLN) and for the
Central Limit Theorem (CLT), two pillars of theoretical statistics, and of much of
applied statistics because we rely on LLN and CLT to build intuitions, heuristic
arguments, or even models. However, identity (2.3) implies that once we lose control of probabilistic sampling, then the driving force behind the estimation error is
no longer the sample size n, but rather the population size N. Specifically, (2.3)
and (2.5) together imply that
(3.1) Zn,N ≡ Gn − GN

VSRS(Gn)
= ρR,G1−f
f σG
1−f
n S2
G
= √
N − 1ρR,G.
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Andrew Gelman et al. @statmodeling.bsky.social · 10/10/2026
The problem is noise, not N: why increasing the sample size isn’t all that. statmodeling.stat.columbia.edu/2026/10/10/t...
statmodeling.stat.columbia.edu
The problem is noise, not N: why increasing the sample size isn’t all that. | Statistical Modeling, Causal Inference, and Social Science
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Dr. Joscelin Rocha-Hidalgo 🇧🇴🏳️‍🌈 @joscelinrocha.com · 09/10/2026
📢 Assistant Professor–Clinical Psych (Tenure-Track) UNC Greensboro is seeking a scholar in child/adolescent clinical psych, with particular interest in researchers using a dev psychopathology approach 📅 Oct 1, 2026 🔗 buff.ly/gp232fV 📧 Blair Wisco (bewisco@uncg.edu)
buff.ly
https://spartantalent.uncg.edu/postings/35832
The Department of Psychology at the University of North Carolina at Greensboro invites applications for a tenure-track position in Clinical Psychology (Assistant Professor level) to begin August 1,…
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Berna Devezer @devezer.bsky.social · 02/10/2026
A revised version of this preprint is now posted on arXiv. The theory section is rewritten, improving model exposition based on feedback we received, we fixed some confusion and errors, contextualized the models more carefully so the interpretation becomes clearer, and improved the overall writing.
arxiv.org
The Difference Between "Replicable" and "Not Replicable" Is Not Itself Scientifically Replicable
Replication studies estimate the replicability rate of scientific results by aggregating binary verdicts of experiments as ``replicated'' and ``not replicated''. These estimates assume rarely attainab...
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Berna Devezer @devezer.bsky.social · 08/10/2026
apropos of nothing in particular (total lie btw), i often think abt how people worry so much about error control without ever worrying abt model specification. whole lits in social sciences impose unwarranted model misspecification as a means to not to inflate your type 1 error. makes you wonder...
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Sean E Moore @seanemoore.bsky.social · 08/10/2026
Interested in teaching Psychology in Canada at a small undergraduate campus affiliated with large research intensive university? Then come work with me! Happy to answer any questions people might have about the job. iaejup.fa.ocs.oraclecloud.com/hcmUI/Candid...
iaejup.fa.ocs.oraclecloud.com
Assistant Professor - Psychology
Location - This role is in-person. Work primarily takes place at Augustana Campus, Camrose. The Department of Social Sciences at the Augustana Faculty of the University of Alberta invites applications...
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Dr. Joscelin Rocha-Hidalgo 🇧🇴🏳️‍🌈 @joscelinrocha.com · 08/10/2026
📢 Assistant Professor – Child Clinical Psychology (Tenure-Track) Penn State is seeking a scholar in child clinical psych. Priority areas include child/adolescent mental health and interventions. 📅 Oct 1, 2026 🔗 buff.ly/4oBwwH0 📧 Martha Wadsworth (mew27@psu.edu)
buff.ly
Assistant Professor, Child Clinical Psychology, Department of Psychology
APPLICATION INSTRUCTIONS: CURRENT PENN STATE EMPLOYEE (faculty, staff, technical service, or student), please login to Workday to complete the internal application process. Please do not apply here,…
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Matthias Mehl @mehlmr.bsky.social · 08/10/2026
We are hiring an Assistant Professor in Social/Personality Psychology. Come join our vibrant group of area and department faculty and the beautiful Sonoran Desert. If you have questions, please don’t hesitate to reach out: arizona.csod.com/ux/ats/caree...
arizona.csod.com
Assistant Professor, Social & Personality Psychology (T/TE)
Maintain an active research program with extramural funding.Teach courses at the graduate and undergraduate levels and contribute to mentoring student...
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Anthony Perillo, Ph.D. @anthonyperillo.bsky.social · 05/10/2026
UNM is a great place to work. CASAA is a great group of people (scholars too) & reflects the greater good of the Psych Dept. New Mexico is a great place to live. If you're open to relocating, this is a fantastic position.
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Henrik Singmann @singmann.bsky.social · 02/10/2026
New preprint: When should you use linear mixed models (LMMs), and when is repeated-measures (RM) ANOVA enough? LMMs offer greater flexibility. But does that make them a better default? My paper argues for statistical parsimony: use RM-ANOVA when both methods are appropriate. osf.io/preprints/ps...
osf.io
When to Use Mixed Models and When RM-ANOVA - An Argument for Statistical Parsimony
When should researchers use linear mixed-effects models (LMMs) versus repeated-measures analysis of variance (RM-ANOVA) for analysing repeated-measures data? I first outline the conceptual and statist...
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Eiko Fried @eikofried.bsky.social · 30/07/2026
If you read one paper on the conceptualization of mental health problems this year, make it this one. Much of it aligns closely with my views—bummer it's not published elsewhere. Curious what you think and which clinical, research, or logical weak spots you see. doi.org/10.3389/fpsy...
doi.org
Frontiers | Problem-sustaining patterns: redesigning the concept of mental disorder
We propose the concept of a problem-sustaining pattern as a revision of the established concept of mental disorder. The proposed concept preserves valuable f...
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Martin Plöderl @ploederl.bsky.social · 03/10/2026
Ooops, here is the link: mmmdata.io/posts/2025/0...
mmmdata.io
If researchers find Cohen's *d* = 8, no they didn't
I’ve spent a lot of time thinking about the plausibility of standardized effect sizes in the last year. From a trustworthiness assessment perspective, (standardized) effect sizes have a great combinat...
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Stephen Wild @stephenjwild.bsky.social · 03/10/2026
Do you teach the Kim article? journals.sagepub.com/doi/abs/10.3...
journals.sagepub.com
The Causal Structure of Suppressor Variables - Yongnam Kim, 2019
Suppression effects in multiple linear regression are one of the most elusive phenomena in the educational and psychological measurement literature. The questio...
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Peter Tennant @pwgtennant.bsky.social · 02/10/2026
"Not always towards the null: reconsidering the direction of overadjustment bias" - read our new paper in the @intjepidemiol.bsky.social led by Frerik Smit! Overadjustment for a mediator is often thought to 'bias towards the null', but the bias can be in any direction - as the paper explains!
academic.oup.com
Not always towards the null: reconsidering the direction of overadjustment bias
Abstract. Overadjustment bias occurs when adjusting for a variable increases rather than decreases bias. It commonly arises in studies estimating the total
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moin syed @syeducation.bsky.social · 01/10/2026
Gave a talk in my dept. on the OSF transition. I wrote up a rough script of the session, which could be of interest to others. I synthesize existing resources and provide my own perspectives. Comments and corrections welcome! zenodo.org/records/2306...
the header for a paper describing "Life after OSF" #metascience
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Debra Titone @dtitone.bsky.social · 20/09/2026
Two #Developmental TT positions at McGill.. Could include people who study #language and #multilingualism. Please forward to colleagues/advanced trainees who might wish to join us in Montreal, Canada! mcgill.wd3.myworkdayjobs.com/McGill_Caree...
mcgill.wd3.myworkdayjobs.com
Tenure-Track Position (Assistant Professor), Developmental Psychology, Department of Psychology
Please refer to the How to Apply for a Job (for External Candidates) job aid for instructions on how to apply. If you are an active McGill employee (ie: currently in an active contract or position at ...
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Julia Strand @juliafstrand.bsky.social · 19/09/2026
New preprint with @violetsarebrown.bsky.social: "Measuring Up: Accessible Approaches for Improving Measurement Practices in Psychological Science." The aim of the paper is to reduce barriers to entry to doing measurement work in Psychology. #schmeasurement osf.io/preprints/ps...
osf.io
OSF
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Dan Quintana @dsquintana.bsky.social · 19/09/2026
And if you want to see how your OSF repos compare against this corpus in terms of usability try my OSF reusability checker app. This app also provides tips if it flags any potential issues dsquintana.shinyapps.io/osf-reusabil...
Screenshot of a web app called the OSF Reusability Checker. A panel on the left takes OSF project links or IDs, with a checkbox for "Also inspect code" and a Check button. On the right, results for one project, kd6p8: it contains data or code, is documented, and has retrievable code. A percentile chart shows its 21 downloads at the 10th percentile for projects of its age, 0.2 times what a repository that age typically gets. Below, three bars compare it with published psychology projects: documented (30% of 672 projects) — this repo yes; hard-coded path (34% of 333 with code) — no; loads a missing file (40% of 333 with code) — no. A results table lists 21 downloads, age-adjusted percentile 10, reuse score 4 out of 4, cleanup "clean", and "looks good".Screenshot of one row from the OSF Reusability Checker's results table, for project rxphw (one of mine!). It has 1,558 downloads, placing it at the 98th percentile for repositories of its age, but scores only 2 out of 4 on reuse, with the cleanup verdict "needs data/code added". The "what to fix" column reads: 6 scripts hard-code a file path — use here::here(); 6 missing files, including 3 data files — deposit them, or add a data-availability statement if access is restricted.
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Dan Quintana @dsquintana.bsky.social · 19/09/2026
If you want to look at (or download) this dataset, check out the paper's data explorer shiny app dsquintana.shinyapps.io/osf-material...
Screenshot of a searchable data table web app companion to the paper. A left sidebar holds filters: journal (Cognition, Journal of Experimental Social Psychology, Journal of Memory and Language, Psychological Science), year (2015, 2020, 2025), article type (all, empirical only, non-empirical only, has a repository link, has OSF downloads only), and documentation (all, documented, has a README file), plus a button to download the filtered rows as CSV. The main table lists one row per paper with columns for DOI, title, journal, year, type, platform, OSF link, downloads, citations, altmetric, support percentage, README, documented, doc level, hard-coded path, missing file, codebook, and columns documented. Visible rows are 2015 Cognition papers with download counts from 170 to 401.
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Jan Vanhove @janhove.bsky.social · 18/09/2026
New blog post: "Cluster analysis: A skeptic’s guide". In which I ask a few questions that social scientists wishing to identify hidden classes in their data ought to address. janhove.github.io/posts/2026-0...
A two-dimensional scatterplot showing a three-cluster solution.

Caption: "Figure 2: A visualisation of a Latent Profile Analysis fit. Such visualisations may help readers appreciate that the clusters aren’t nicely separated and that the researchers’ notion of clusters may not correspond to their own."Table of contents:

Refresher: What is cluster analysis?
What are the clusters for?
What clusters, exactly?
Does the pipeline work?
What does the solution look like?
When running follow-up analyses, how is the uncertainty in the cluster assignments taken into account?
Was it worth it?
Conclusion
References
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Michael Friendly @datavisfriendly.bsky.social · 11/09/2026
True — but a fish with #rstats {VisCollin} at least knows which variables are swimming in the same school. friendly.github.io/VisCollin/
friendly.github.io
Visualizing Collinearity Diagnostics
Provides methods to calculate diagnostics for multicollinearity among predictors in a linear or generalized linear model. It also provides methods to visualize those diagnostics following Friendly & K...
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Reposted by Jill A. Jacobson
Dan Simpson @danpsimpson.bsky.social · 11/09/2026
But let’s pour one out for people who do the work of letting people be really fucking mad at them (privately and publicly) because that’s not the worst possible option.
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mozardt @mozardmohtar.bsky.social · 11/09/2026
#rstats #shinyapp #shinyitemanalysis does what it say shiny.cs.cas.cz/ShinyItemAna..., here is the article www.cambridge.org/core/journal...
shiny.cs.cas.cz
ShinyItemAnalysis
Test and Item Analysis with Shiny
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Magnus Johansson @pgmj.bsky.social · 09/09/2026
Curiously, I again encountered a CFA paper that refers to Marsh et al 2004 to justify rule-of-thumb cutoffs to interpret model fit. Marsh's title is "Comment on hypothesis-testing approaches to setting cutoff values for fit indexes and dangers in overgeneralizing Hu and Bentler’s (1999) findings"
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Protzko @protzko.bsky.social · 10/09/2026
Do small effects really accumulate to make big effects? Not really. And certainly not when there are other causes on the thing you are looking at. Which, you know, is always. From Berggren & @jkflake.bsky.social journals.sagepub.com/doi/pdf/10.1... #psych
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Dr Mircea Zloteanu 🍂 🍃 @mzloteanu.bsky.social · 09/09/2026
#statstab #613 Additional caution regarding rules of thumb for variance inflation factors: extending O’Brien to the context of specification error Thoughts: I'm sure some will have strong opinions on VIF. #VIF #regression #ruleofthumb #multicolinearity link.springer.com/article/10.1...
link.springer.com
Additional caution regarding rules of thumb for variance inflation factors: extending O’Brien to the context of specification error - Quality & Quantity
Despite the popularity of Variance Inflation Factor (VIF) scores as multicollinearity diagnostics, methodological work has voiced skepticism. In a paper that has become the most highly cited reference...
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Stephen Wild @stephenjwild.bsky.social · 10/09/2026
I mean bsky.app/profile/step...
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Dr Anna Leshinskaya @annaleshinskaya.bsky.social · 09/09/2026
Thrilled to announce that my department, UCI cognitive sciences, is hiring a tenure-track assistant professor in the area of computational social cognition. Further information including the application can be found at: recruit.ap.uci.edu/JPF10411
recruit.ap.uci.edu
Assistant Professor - Cognitive Sciences
University of California, Irvine is hiring. Apply now!
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Aaron Fisher @aaronjfisher.bsky.social · 10/09/2026
Quant job in Berkeley Psych. Deadline on 9/29. aprecruit.berkeley.edu/JPF05480
aprecruit.berkeley.edu
Assistant Teaching Professor Quantitative Methods-Psychology
University of California, Berkeley is hiring. Apply now!
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Lindsey Powell @lindseypowell.bsky.social · 09/09/2026
UCSD Psychology is hiring!! We’re seeking a new assistant professor colleague who studies high-level human cognition, broadly construed. Please share and/or apply! apol-recruit.ucsd.edu/JPF04646
apol-recruit.ucsd.edu
Assistant Professor in High-level Human Cognition
University of California, San Diego is hiring. Apply now!
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aaron bornstein @aaronbornstein.bsky.social · 03/09/2026
UC Irvine Cognitive Sciences is hiring! Focus on social cognition, broadly construed. Come be my colleague :) I am not on the search committee but happy to talk about the campus, environment, careers, etc any time. recruit.ap.uci.edu/JPF10411
recruit.ap.uci.edu
Assistant Professor - Cognitive Sciences
University of California, Irvine is hiring. Apply now!
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James E. Pustejovsky @jepusto.bsky.social · 01/09/2026
Our package for fitting meta-analytic selection models to data with dependent effect sizes is finally, officially, available on CRAN. Been working on this with Megha Joshi (@meghapsimatrix.bsky.social) and Martyna Citkowicz for a few _years_ now.
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Juha Karvanen @juhakarvanen.bsky.social · 01/09/2026
When does“variance explained” actually mean causation? In our new preprint, Olli Saarela and I develop graph-based causal variance decompositions. The framework clarifies when components of an ordered variance decomposition have causal interpretations. arxiv.org/abs/2608.27140
arxiv.org
Graph-based causal variance decompositions: When "variance explained" means causation
Recursive application of the law of total variance decomposes the marginal variance of an outcome into components attributed to explanatory variables and a residual component. The resulting decomposit...
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Eliza Bliss-Moreau @eblissmoreau.bsky.social · 29/08/2026
We're currently hiring a new director for the renowned UC Davis Center for Mind and Brain. The director will be appointed as a Professor in our psychology department: recruit.ucdavis.edu/JPF07814
recruit.ucdavis.edu
Director of the Center for Mind and Brain & Professor of Psychology
University of California, Davis is hiring. Apply now!
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Francisco Rodriguez-Sanchez @frodsan.bsky.social · 26/08/2026
Nice explainer of many widespread #statistics misuses! With real examples
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samuel mehr @mehr.nz · 28/08/2026
I am currently recruiting for a 2-year postdoc/research fellow role at the University of Auckland here in New Zealand, focusing on auditory perception, hearing, and music in older adults, including people with Alzheimer's disease or other dementias ~NZ$100k/yr, flexible start date, please apply!
forms.gle
Postdoc in The Music Lab // Expression of interest
Note. The below text is a general overview of the sorts of postdocs we often recruit. We are currently recruiting candidates for a 2-year position focusing on auditory perception in aging populations,...
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Rebecca Peretz-Lange @rebeccaperetzlange.bsky.social · 28/08/2026
We're hiring! Clinical Psychologists, come work in this beautiful building with me at Vassar! Please repost!
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Blair Wisco @bwisco.bsky.social · 28/08/2026
We are hiring an assistant professor in child clinical psychology! Review ad and apply here: spartantalent.uncg.edu/postings/35832 Please repost and share widely! @cppugach.bsky.social @kwapillab.bsky.social @michaeljkane.bsky.social @mikey-jensen.bsky.social @levirbaker.bsky.social
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Shirley Wang @shirleybwang.bsky.social · 23/07/2026
Yale Psychology is hiring an Assistant Professor in Clinical Psychology! Review of applications will begin on September 2, 2026. Link: apply.interfolio.com/188806 Please share widely & apply!
apply.interfolio.com
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
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Ziv Ben-Zion, PhD @zivbenzion.bsky.social · 23/08/2026
Excited to share a Fulbright postdoctoral opportunity to join our lab at the University of Haifa. As a former Fulbright Postdoctoral Fellow myself, I’m especially happy to now host future fellows. Open to U.S. citizens - deadline: September 15, 2026. Please share!
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Adam Baimel @abaimel.bsky.social · 23/08/2026
🚨 We are hiring a post-doctoral research associate!🚨 Join us in studying spiritual yearning - 2 year position at York University (Toronto) Details here: www.yorku.ca/vpepc/facult... #psychjob #postdoc
yorku.ca
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Andrew Heiss @andrew.heiss.phd · 23/08/2026
First day of class, and first day of a new course and course website! Intro to stats with #rstats and ModernDive (moderndive.com/v2/)
quantf26.classes.andrewheiss.com
Quantitative Methods for International Politics – Quantitative Methods
Use modern statistical and data scientific tools to answer questions about political science and international relations with data
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Mark Rubin @markrubin.bsky.social · 20/08/2026
New review of methods to address demand characteristics by @ocorneille.bsky.social, Chloé Bernard, and @peterlush.bsky.social doi.org/10.3758/s134...
Demand artifacts stem from participants’ beliefs about treatment effects and motivations to respond in accordance with these beliefs. These artifacts typically build on subtle cues that exert extraneous influences unbeknownst to researchers, through processes that are not part of their stated theory. Demand artifacts threaten the internal and external validity of studies, and they have been supported across a wide range of psychological domains (e.g., clinical, cognitive, and social psychology, psychology of perception) and beyond (e.g., consumer research, experimental economics, psychosomatic medicine, neurosciences). This article reviews prominent methods used to address them. Our discussion is structured around Corneille and Lush's (2023) framework of demand effects, which distinguishes between participants’ hypothesis formation, motivation, and implementation strategies. We conclude this review by discussing three fundamental questions of broad interest: when should we care about demand artifacts, what is the best approach for addressing them, and how can we usefully build on demand artifacts?
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Rebecca Peretz-Lange @rebeccaperetzlange.bsky.social · 12/08/2026
Vassar's Dept of Psychological Science is hiring an Assistant Prof (tenure-track) specializing in clinical psych or psychopathology. Come join me in the beautiful Hudson Valley! 🍁🍃🍎 vassar.wd1.myworkdayjobs.com/en-US/Vassar... Please repost!! 🔁
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Jennifer Tackett @jnfrltackett.bsky.social · 07/08/2026
I'm thrilled to announce that we are recruiting a new faculty colleague in our Northwestern University Clinical Science program this fall! Please share widely with your colleagues, students, and mentees! psychology.northwestern.edu/people/facul...
psychology.northwestern.edu
Job Opportunities: Department of Psychology - Northwestern University
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